Turbocompressor

Abstract

A turbo-compressor (1) having a turbo-compressor element (2) with a housing (4) in which an impeller is arranged, the housing (4) having an inlet (5) for the gas to be compressed and an outlet for the compressed gas, the turbo-compressor (1) further having an intake filter (9) comprising a plurality of cylindrical filter cartridges (10), each filter cartridge having a circular outlet opening (11), characterized in that an inlet element (13) is arranged between the intake filter (9) and the inlet (5) of the housing (4), the inlet element having a plurality of straight flow channels (14), each straight flow channel extending from one of the aforementioned circular outlet openings (11) to the inlet (5) of the housing (4), the flow channels (14) each extending from the respective circular outlet opening (11) towards one another to form a joint flow-through opening (15) which is connected to the inlet (5).

Description

TECHNICAL FIELD

[0001] The present utility model relates to a turbo-compressor. BACKGROUND

[0002] It is known that a turbo-compressor comprises a housing in which an impeller is arranged, wherein a gas, for example ambient air, is sucked in via an inlet in the housing, which gas is compressed by the impeller, after which the compressed gas leaves the turbo-compressor via an outlet in the housing.

[0003] Traditionally, an intake filter is connected to the inlet in order to purify the gas before it enters the turbo-compressor.

[0004] The known intake filter is in the form of a flat filter.

[0005] It is also known that an intake filter has a plurality of cylindrical filter cartridges which are arranged in a grid-like manner on a plate or the like, the longitudinal axes of the filter cartridges extending parallel to one another. In this case, the outlets of the filter cartridges are usually arranged on the plate or the like.

[0006] The outlet of the intake filter is a combination of the individual circular outlets of the individual filter cartridges, which further leads to the inlet of the turbo-compressor, which inlet is usually circular.

[0007] The transition from the outlet of the intake filter to the inlet of the turbo-compressor is realized in various ways.

[0008] The aforementioned plate comprising the individual circular outlets of the individual filter cartridges is usually connected to the inlet of the turbo-compressor by means of a funnel-like element.

[0009] The disadvantage of this solution is that a turbulent flow arises at the sharp-edged portion of the funnel-shaped element, which produces a sharp expansion by means of the plurality of cylindrical filter cartridges arranged on the aforementioned plate, through which the gas flow must flow.

[0010] The disadvantage of this is that the gas flow to the inlet is disturbed.

[0011] A pressure sensor is located at this inlet and is used together with a pressure sensor located in the vicinity of the outlet of the turbo-compressor to determine the pressure difference across the impeller. The pressure difference is a measure of the turbo-compressor flow.

[0012] Due to the disturbance of the gas flow, pressure fluctuations or noise occur in the pressure difference measurement.

[0013] In other words, it is no longer possible to measure the pressure difference correctly.

[0014] In particular at high flows, a lot of noise occurs in this pressure difference measurement. SUMMARY

[0015] The utility model discloses a purpose at solving at least one of above-mentioned shortcomings and other shortcomings.

[0016] The utility model relates to a kind of turbo compressor, turbo compressor has turbo compressor element, turbo compressor element has shell, impeller is arranged in shell, shell has the inlet for the gas to be compressed and the outlet for compressed gas, turbo compressor further has air intake filter, air intake filter includes multiple cylindrical filter core, each filter core has circular outlet opening, inlet element is arranged between air intake filter and the inlet of shell, inlet element has multiple straight flow channels, each straight flow channel extends from one of the aforementioned circular outlet opening to the inlet of shell, each flow channel extends towards each other from each circular outlet opening to form joint flow opening, joint flow opening is connected to inlet.

[0017] In the inlet element, the aforementioned straight flow channel extends at an angle relative to the filter core. In other words, the longitudinal axis of the filter core extends at an angle relative to the longitudinal axis of the respective flow channel.

[0018] The advantage is that, by using the aforementioned inlet element, the filtered air flow from the filter core is directed to the inlet of the shell, with minimal or no turbulence.

[0019] The optimization of the air flow by this air guiding system avoids the aforementioned pressure fluctuations in the differential pressure measurement.

[0020] This makes the differential pressure measurement stable and reliable.

[0021] In addition, the improvement of the air flow is also accompanied by an increase in the efficiency of the turbo compressor.

[0022] Another positive effect that can be achieved with the inlet element according to the utility model is that the instability that occurs when the impeller is rotating is less, thereby greatly reducing the radial forces in the radial bearing.

[0023] A further advantage of the inlet element is that the acoustic properties of the inlet element are changed with respect to the inlet and the air intake filter, thereby eliminating the resonance.

[0024] A further effect of the inlet element is that the air supply of the inlet is split into the individual flow channels and delimited by the individual flow channels, so that the influence of the instability on the gas supply is limited.

[0025] It is also known that the rotation of the impeller also influences the air flow upstream. Since the inlet element splits the air flow, the influence thereof can be reduced.

[0026] According to the preferred feature of the utility model, the inlet element is made of a steel sheet.

[0027] By folding the steel sheet to form the straight flow channels, the inlet element can be manufactured very easily and inexpensively.

[0028] This is a simpler and cheaper option compared to e.g. casting.

[0029] By placing the inlet element itself in the gas-tight funnel, the inlet element does not need to be gas-tight, further reducing production costs.

[0030] For such embodiments, the cross-section of the flow channel is preferably polygonal.

[0031] According to a preferred feature, the surface area of the cross-section of the flow channel is constant or varies by no more than 10% along the longitudinal axis of the respective flow channel.

[0032] The constant or near-constant flow-through opening ensures minimal or no additional turbulence.

[0033] According to an embodiment, the turbo-compressor is a direct-drive turbo-compressor.

[0034] According to an embodiment, the filter cartridge is arranged on a flat plate, the longitudinal axis of the filter cartridge extending perpendicular or substantially perpendicular to the flat plate.

[0035] According to an embodiment, the shape of the joint flow-through opening corresponds to the shape of the inlet of the housing. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to better illustrate the features of the present utility model, preferred embodiments of a turbo-compressor according to the present utility model are described below in the form of non-limiting examples with reference to the accompanying drawings, in which:

[0037] Figure 1 is a perspective schematic view of a turbo-compressor according to the present utility model;

[0038] Figure 2A and Figure 2B is a perspective schematic view of an inlet element according to the present utility model;

[0039] Figure 3A and Figure 3B is a perspective schematic view of an alternative embodiment of an inlet element according to the present utility model. DETAILED DESCRIPTION

[0040] Figure 1 The turbo-compressor 1 shown comprises a turbo-compressor element 2 and a drive 3.

[0041] In the present case, but not necessarily, the turbo-compressor 1 is a direct-drive turbo-compressor 1.

[0042] The turbo-compressor element 2 has a housing 4 in which an impeller is arranged, the housing 4 having an inlet 5 for the gas to be compressed and an outlet for the compressed gas, to which an exhaust duct 6 is connected.

[0043] In the present case, the turbo compressor 1 also has the necessary electronics 7 and cooling 8.

[0044] According to the application, the turbo compressor 1 also has an intake filter 9.

[0045] The intake filter 9 has a plurality of cylindrical filter cartridges 10.

[0046] In Figure 2A and Figure 2B , the intake filter 9 is shown in more detail.

[0047] As can be seen from the figure, the intake filter 9 in the present case comprises two cylindrical filter cartridges 10.

[0048] Each filter cartridge 10 has a circular outlet opening 11. Clean air exits the filter cartridge 10 via the circular outlet opening 11.

[0049] In the present case, but not necessarily for the application, the filter cartridges 10 are arranged on a plate 12.

[0050] In Figure 2A and Figure 2B , their outlet openings 11 are arranged on the plate 12. The plate 12 thus also has openings or passages.

[0051] The longitudinal axis X-X' of the filter cartridges 10 extends perpendicular or approximately perpendicular to the plate 12.

[0052] According to the application, an inlet element 13 is arranged between the intake filter 9 and the inlet 5 of the housing 4.

[0053] In Figure 2A and Figure 2B , the inlet element 13 is shown in more detail.

[0054] It has a plurality of straight flow channels 14, in the present case two, as many as there are filter cartridges 10 of the intake filter 9.

[0055] The flow channels 14 extend from the circular outlet openings 11 to the inlet 5 of the housing 4.

[0056] The flow channels 14 each extend from the circular outlet openings 11 towards one another to form a joint flow-through opening 15.

[0057] This means that the longitudinal axes Y-Y' of the flow channels 14 extend towards one another and thus not parallel to one another.

[0058] The joint flow-through opening 15 is connected to the inlet 5.

[0059] To this end, in this embodiment the shape of the joint flow-through opening 15 corresponds to the shape of the inlet 5 of the housing 4.

[0060] As Figure 2A and Figure 2B shown, the inlet element 13 is in this case made of a steel sheet.

[0061] The straight flow channels 14 are folded from the steel sheet, so that the straight flow channels 14 have a polygonal cross section.

[0062] In this case, the cross section is hexagonal. Note that this does not have to be a regular hexagon.

[0063] Furthermore, in this case the surface area of the cross section is not constant, but varies by 10% along the longitudinal axis Y-Y’ of the flow channels 14.

[0064] In particular, the cross section decreases by 10% in the direction of the inlet 5 of the housing 4.

[0065] The operation of the turbo-compressor 1 is very simple, as described below.

[0066] The suction gas to be compressed is purified when passing through the intake filter 9, the purified gas leaving the intake filter 9 via the circular outlet opening 11.

[0067] The purified gas finally enters the flow channels 14, the gas from each filter cartridge 10 finally entering the respective flow channel 14.

[0068] From there, the two separate gas flows are directed to the joint flow-through opening 15.

[0069] Due to the special design of the inlet element 13, no turbulence occurs here.

[0070] The gas finally flows from the joint flow-through opening 15 to the inlet 5 and then into the turbo-compressor element 2, where the gas is compressed in a known manner and leaves the turbo-compressor 1 via the exhaust duct 6.

[0071] Figure 3A and Figure 3B Variants of the inlet element 13 according to Figure 2A and Figure 2B are shown, in this case the inlet element 13 comprising four straight flow channels 14, so that the inlet element 9 likewise comprises four cylindrical filter cartridges 10.

[0072] In this case, the straight flow channels 14 also merge to form the joint flow-through opening 15.

[0073] In this case, the flow channels 14 have a constant cross section.

[0074] In other respects, this embodiment and its operation correspond to Figure 2A andFigure 2B The same applies to the embodiments of

[0075] The utility model is not limited to the embodiments described by way of example and shown in the drawings, but the turbocompressor according to the utility model can be implemented in all shapes and sizes without leaving the scope of the utility model.

Claims

1. A turbo compressor (1) having a turbo compressor element (2), the turbo compressor element having a housing (4) with an impeller arranged inside the housing, the housing (4) having an inlet (5) for a gas to be compressed and an outlet for compressed gas, the turbo compressor (1) further having an intake filter (9) comprising a plurality of cylindrical filter elements (10), each filter element having a circular outlet opening (11), characterized in that, An inlet element (13) is provided between the intake filter (9) and the inlet (5) of the housing (4). The inlet element has a plurality of straight flow channels (14), each of which extends from one of the aforementioned circular outlet openings (11) to the inlet (5) of the housing (4). Each flow channel (14) extends from each circular outlet opening (11) toward each other to form a combined flow opening (15), which is connected to the inlet (5).

2. The turbine compressor according to claim 1, characterized in that, The inlet element (13) is made of steel plate.

3. The turbine compressor according to claim 1 or 2, characterized in that, The cross-section of the flow channel (14) is polygonal.

4. The turbine compressor according to claim 1 or 2, characterized in that, The surface area of ​​the cross section of the flow channel (14) is constant, or varies by no more than 10% along the longitudinal axis of the corresponding flow channel (14).

5. The turbine compressor according to claim 1 or 2, characterized in that, The turbo compressor (1) is a direct-drive turbo compressor (1).

6. The turbine compressor according to claim 1 or 2, characterized in that, The filter element (10) is arranged on the plate (12), and the longitudinal axis of the filter element extends perpendicular to the plate (12).

7. The turbine compressor according to claim 1 or 2, characterized in that, The shape of the combined flow opening (15) corresponds to the shape of the inlet (5) of the shell (4).

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